Sheave-block



4 E. E. EDSROM.

SHEAVE BLOCK. APPLICATION HLED IIAR. 12. 1920.

1,378,844.` v Patented Ma 24, 1921.

E RNESTESTDM INVENTOR Claims.

EARNEST E. EDSTROM, -OF WHITFISH, MONTANA.,

sH Av'E- oCK Application filed March 12, 1920.

To aZ wbom it'may concern: i

Be it known that I, EARNEST E. EDSTROM a citizen of the United States, residing at Whitefish, in the County of Flathead and State of Montana, have invented certain newv and useful Improvements in Sheave-Blocks of which the following is a specification, reference being 'had therein to the accompanying drawings.

' This invention relates to a block or pul ley device, and the object of'the invention is the construction of a'simple and eflicient block or pulley device for increasing power.

Another object of the' invention is the production of a block or pulley device which is provided with means, whereby the block or pulley device may be released at any time whether under strain or not.

With these andother objects, in view, my

invention comprises certain 'novel constructions, arrangements and combinations of parts as will be hereinafter fully described, illustrated in the accompanying drawin s, and more particularly pointed out in tle In the drawing: Figure 1 is a top plan view constructed in accordance' with the' present invention.

Fig. 2 is a plan view of the bottom plate and the sheave or pulleymounted thereon. i

Fig. 3 is a sectional view taken on the line 3-`3 of Fig. 1 and looking in the direction-of: the arrows.

Fig. 1 is a Section taken on the line 4r-4 of Fig. 3 and looking in the direction of the arrow.

Referring to the drawingbynumerals, 1 designates the bottom 'plate which is provided with an elongated tongue 2, in which tongue is an elongated aperture 3; at the forwardend of the standing guard 4. s

The top plate 5 is bent inwardly, at and has a rearwardly-eXtending elongated tongue 7, corresponding to the tongue of'the bot to'm platel. Anelongated aperture 3 registers with the similar aperture 3 of the,

tongue 2. A short shaft 8 eXtends through plates 1 and 5, and journaled upon the shaft 8 is a sheave or pulley 9.

A looking lever 10 is employed for fasten' ing the plates and tongues normally together. This tongue comprises a Straight body, terminating in an upwardly-extend ing inner end 11, and its outer end is proispecification of Letters Patent.

' wardly-extending foot 20;'the feet 20 are of the [device plate 1 is the curved up- Patented May Serial NO. 365,298. V l

y vided with ra downwardly-extending hook ]2; the hook is bowed inwardly as at 13 and this bowed outer end eXtends through the' elongated apertures 3 and This inward: bowing of the outer end produces a Socket" 13 that forms an admiral receiving portion for an anchor rope or cable 14. V s

Formed upon the top of the plate 5 are lugs 15; each lug l'has an inner roundedface 16, and these lugs constitute guiding means wherebythe. inner end ofthe looking lever can be quickly run under the looking link 17. V The looking link 17 has a substantial U' V shaped body 18, the inner ends of the body terminating in downwardly-extending legs 19,'and each leg l9 is provided with an inpivotally lnounted in the lugs 15.

i, b After the inner end-11. of 'the looking" lever 10 has been placed between the guiding lugs 15, the looking link 17 being in the position shown by dotted lines, Fig. '3, 1s then swung up to the position shown infull' lines to hold the' lever `1O in position; to unlock thelever 10, all that is needed-is to kickor strike the link 17 to cause it to swlng to its outermost position shown in dotted lines, Fig. 3, whereupon f the 'lever 10 canbegquickly removed from the tong ues 2 and 7; this' is accomplished by removing the outer bowed. or hooked end`12 from the apertures 3 and 4, which removal" of the lever" will -permit'the top plate to be removed ofi' the shaftv Sand the guard4 of the bottom plate. Upon the removal-'of the plate 5, the pulley 9 can beeasily examined, orthe rope 21 may be placed on or` ofl' the pullev' "L V It will be understood that' by having the guard 4 in the front end', of the block or pulley device, 'between the cable or rope 21,

Fig. 2, whenthe block isused on the ground, as for working with stumps, time and-labor and power are saved bykeeping sticks, roots' and 'dirt from -working'into :the block bek l the preferred form of my invention, in the extensive manufacture of the same, certain minor changes Or alterations may appeal to' one Skilled in the art to which this invention relates, and, I, therefore, reserve the right to make such alterations or change as shall oombination of a bottom and a top plate, a

pulley journaled between said plates, said plates provided with registering apertures, a lever forengagement in said apertures for holding said plates together, and means for looking the lever.

3. In a device of the class described, the oonbination of a top and a bottom plate, a pulley journaled between said plates, said plates provided with tongues, said tongues provided with elongated registering apertures, and a looking lever detachably Inounted in said registering apertures for normally holding' the plates in an assembled position 4. `In a device of the class described, the combination of a pair of plates, a pulley journaled 'between said plates said plates provided with elongated tongues, said tongues provided with elongated registering apertures, and a looking lever provided with a bowed outer end and Said bowed end eX- tending through the registering apertures of the tongues for holding the same together.

1'5. In a device oI" the' ola-ss described, the oombination of a pair of plates, a pulley journaled between said plates, said plates provided with elongated tongues, said tongues provided near their outer ends with elongated apertures, a looking lever producmg a Cable-receiving Socket and means vided at its inner end with an outwardlyeXtending inner end, and with an inwardlyeXtending outer end, said outer end being bowed inwardly and the bowed portion positioned in the elongated apertures of the tongues, said inwardly-bowed portion proat the inner end of the lever for holding the same upon one of the plate's.

6. In a device of the class described, the

oombinationof a pair of plates, a pulley journaled between said plates, one of Said plates being provided with a pair of lugs,

a looking link pivotally mounted upon said lugs, and a lever eXtending between the lugs and-under the looking link and also through portions of the plates for normally holding the plates in an assembled position.

7. In a device of the class described, the

oombination of a pair of plates, a pulley t normally holding the plates together.

8 In a device of theolass described, the oombination of a pair of plates, a pulley journaled between said plates, one of said plates provided with upstanding lugs, said lugs provided with inner rounded or ourved uiding faoes, a looking link provided with eet, said fee't journaled in *said lugs, a looking lever eXtending at 'one end through por tions of the plates and at its other end under the looking link, said looking lever provided with an upwardly ourved end engaged by the looking link when the parts are in 'their' normally assembled position for holding the plates together.

' 9;' sheave block oomprising a pair 'of plates arranged for the support of'a' rotatable 'sheave therebetween a tongue extend' ing from each' plate, a level', formed to retain within its length an anohor 'device and provided at its one end with means for rela i tively securing said tongues and a releasable securing deviceior the other' end' of said lever. i i

10. A sheave block comprising a' pair of plates, each having a perforatedtongue, a pulley journaled between said plates, a lever, aving a hook for engagement in the perforations of said tongues and a rope reoeiv ing socket adjacent said hook, and means for' releasably Seouring the end 'of the lever opposite the hook tothe one plate.

' In testimony whereof I hereunto afliX my Signature. i

EARNEST EDSTROM.` 

